#Cisco mac address security per vlan full#

Learnt addresses are added to the switches configuration much the same as if you were to explicitly define the allowed address via the port security command, such as : Sticky MAC allows the configured number of mac address that enters the port to be assigned against it, any further MACs would be denied. Restrict – The same as protect mode but additionally generates a syslog message. Protect – Frames from MAC addresses other than the permitted addresses are dropped traffic from allowed addresses is permitted to pass normally. Shutdown (default) – The interface is transitioned to a state pf error-disable, that in turn blocks all traffic. (config-if)# switchport port-security violation shutdown (config-if)# switchport port-security maximum 1

#Cisco mac address security per vlan full#

Note : When you enter the default value the full command will not be displayed via a `show run` This can prevent potential CAM overflow attacks. PORT SECURITYĬisco provides the ability via the port-security commands to limit the amount of MAC address that can be populate the mac address table via a specific port. To ensure that a rogue device can not be plugged in and a trunk port formed (meaning all VLAN traffic would be sent out of this port) a switchport can be configured to be only set to access mode. Meaning that they can either be a trunk port or a access port depending on what you plug in. To disable CDP run the following command:īy default ports are set to dynamic desirable. This can be disabled unless otherwise required.ĬDP can be used as an attack vector.

The console port is secured by setting a timeout value along with assigning the previously configured username and password.ī y default the HTTP server is enabled. One password is used for the enable password and the other will later be assigned to the console port.